Subtract 27/81 from 40/10
1st number: 4 0/10, 2nd number: 27/81
40/10 - 27/81 is 11/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 10 × 81 = 810,
40/10 = 40 × 81/10 × 81 = 3240/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
27/81 = 27 × 10/81 × 10 = 270/810 - Subtract the two like fractions:
3240/810 - 270/810 = 3240 - 270/810 = 2970/810 - After reducing the fraction, the answer is 11/3
- In mixed form: 32/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/10-27/81 40/10-54/81 40/20-27/81 40/30-27/81 40/50-27/81 40/70-27/81